Architecture Architektur "Bay of Biscay" Building Burg Cantabria Cantabrie Cantabrien Castle "Castro Uridales" City "Defence work" Espagne Espana Espania Europa Europe "Europe du Sud" Festung Fort Fortification Fortress "Golf von Biskaya" Hafen "Historic district" Ispanya Meer "Middle Ages" "Military building" Mittelalter "Natural waters" "Natürliches Gewässer" Ocean "Old town" Port Santander Sea "Southern Europe" Spagna Spain Spanelsko Spanien Spanje Stadtbild Stronghold Südeuropa Townscape Traffic "Traffic architecture" Verkehr Verkehrsbauten Wasser Water Wehrbau